What are the roles of hydrogen peroxide, oxygen, hydrogen, and catalase in the following chemical reaction? A. Catalase is an enzyme, O2 and H2O are substrates, and H2O2 is a reactant.

B. Catalase is a substrate, O2 and H2O are substrates, and H2O2 is an enzyme.

C. Catalase is a substrate, O2 and H2O are products, and H2O2 is an enzyme.

D. Catalase is an enzyme, O2 and H2O are products, and H2O2 is a substrate.

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.